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A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.
A typical exhaust system. The parts' names translate as follows: Krümmer: manifold (in this case, the exhaust manifold); Hosenrohr: downpipe; Katalysator: catalytic converter; Mittelschalldämpfer: middle silencer (or center muffler); Vorschalldämpfer: front silencer (or pre-muffler); Nachschalldämpfer: rear silencer (or main muffler); Endrohr: tailpipe.
The US National Firearms Act (NFA) of 1934 defined silencers and established regulations limiting their sale and ownership. [21] Both the US Department of Justice and the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) use the term silencer. [22] Hiram Percy Maxim, the original inventor of the device, marketed them as "Maxim Silencers ...
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SilencerCo Osprey .45 suppressor on a Springfield pistol. SilencerCo was founded in 2008 by former President Jonathon Shults and Joshua Waldron. [3] Soon after, SilencerCo launched its first product, a .22 caliber silencer called the Sparrow. [4]
This due to the requirements of US commercial customers who must procure a different Bureau of Alcohol, Tobacco, Firearms and Explosives tax stamp for each silencer they own. [5] Their first silencer was the Sandman series. [3] In 2018 Dead Air introduced Key-Mo, an adaptor which allows the use of Silencerco silencers with Dead Air muzzle ...
Lovehoney Silencer Vibrator Lovehoney The single push-button on this purring vibrator makes it easy to operate and the seven-inch insertable length means it's going to work for a wide range of users.
Interest by Douglas Jack W.Cullum in the noise generated by aircraft engines and propellers led to the design of a silencer for the W2 700 jet engine developed by Sir Frank Whittle and his team at Power Jets Ltd. This original detuner was a straight-through silencer, a simple acoustic tube. A later version consisted of four acoustic sections ...